baber/WOPTO huggingface dataset:
Patent GB-1474207-A (GB)
Title: Separating substances for low vapour pressure
IPC: B01D3/40
Filed: 1974-08-09
Abstract: 1474207 Extractive distillation at high pressures S PETER 9 Aug 1974 [10 Aug 1973] 35265/74 Heading B1B [Also in Division C2] Mixtures are separated by extractive dis-  tillation by passing the mixture as a liquid into a gas which is above its critical temperature and pressure at a pressure such that the density of the liquid and gaseous phases are of the same order of magnitude, together with an entrainer which increases the separation factor and subsequently separating that portion of the mixture which has entered the gaseous phase by partial condensation of the entrainer. Fig. 1 shows mixture and entrainer F being fed to column I, overhead steam G being fed to column II from where distillation product D is withdrawn, stream R is returned as reflux to column I and gas is recycled to foot of column I as stream V; bottom product S being withdrawn. Saturated and/or unsaturated fatty acids, glycerides and polyhydric alcohols may be separated in this manner. The gas may be C 1 -C 4  hydrocarbons or carbon dioxide. The entrainer may be benzene, toluene, xylene, furan, acetonitrile, methylene chloride or a hydrocarbon for the separation of the acids or an alcohol, ketone or water for separating the glycerides or alcohols. The example describes the separation of oleic (bottom product) and stearic acids.
Patent GB-795741-A (GB)
Title: Improvements in or relating to lubricating devices
IPC: F16N27/02
Filed: 1955-12-09
Abstract: 795,741. Engine charges. BOSCH GES., R. Dec. 9, 1955 [Dec. 11, 1954]. No. 35342/55. Class 7(2) [Also in Group XXXIV] A device for delivering lubricant to the induction manifold of a two-stroke internal combustion engine, comprises a storage chamber of constant volume which is adapted to be alternately connected to the outlet of a lubricant supply pump, to receive a charge of lubricant, and to a delivery point, the pressure in the storage chamber being determined by a pressure relief valve connected to the supply pump outlet. As shown in Fig. 1, a housing 1 is fitted with a rotary valve member 2 driven by the engine. The valve has a recess 3 which moves in a storage chamber to receive lubricant from a bore 5 connected to the outlet 6 of a pump 7. The lubricant received by the chamber 3 is delivered through a bore 4 to a delivery point. A by-pass passage 8, 9 branches off from the bore 5 and is fitted with am. adjustable pressure relief valve 10 which, when opened, allows lubricant to return to a pipe 13 connecting the lubricant reservoir with the suction side 14 of the pump 7. In the arrangement shown in Fig. 2, the passage 9 communicates with a bore 15 containing a slide valve 16, and with a pipe line 17 leading into the inlet pipe line 13. The bore 15 communicates with the bore 4. The valve 16 is freely movable in the guide bore 15 and therefore acts to equalize the pressure in the bores 4, 9.
Patent GB-1184433-A (GB)
Title: Ignition Coils
Inventor: TOLLEY LESLIE
IPC: H01F38/12
Filed: 1966-08-08
Abstract: 1,184,433. Direct connections. JOSEPH LUCAS (INDUSTRIES) Ltd. 7 July, 1967 [8 Aug., 1966], No. 35380/66. Heading H2E. [Also in Division H1] A terminal screw 21 forming e.g. the H.T. terminal of an ignition coil, makes direct connection with a laminated iron core 14 through an end portion of one lamination 15 which extends axially from the core towards the insulating cap 12, the end portion adjacent the cap being shaped to define a compression spring 18 bearing against screw 21. A rubber sealing washer 23 prevents leakage of e.g. an oil filling.
Patent GB-912740-A (GB)
Title: Arrangement for quenching semi-conductor thyratrons to which direct voltage is applied
IPC: H03K17/73
Filed: 1961-09-29
Abstract: 912,740. Semi-conductor thyratron switching circuits. SIEMENS-SCHUCKERTWERKE A.G. Sept. 29, 1961 [Dec. 10, 1960], No. 35387/61. Class 40 (6). The switching-off voltage for a semi-conductor thyratron is derived from a separate supply giving a stable output voltage. Fig. 5 shows a thyratron type transistor 5 which when switched into circuit by a switch 3, 4 and rendered conductive by a pulse at 7 passes D.C. current to load 6. A capacitor 10 is charged from a constant voltage supply 10 so that when a second semi-conductor thyratron 11 is made conductive by a signal at its control electrode the current is diverted from thyratron 5 and it becomes non-conductive. Thyratron 11 becomes non-conductive when the capacitor has discharged. The switching off voltage in Fig. 4 is obtained from a supply of mains or higher frequency and fed through a transformer 19 and blocking capacitor 18 to the output circuit. The voltage of this frequency may be obtained from flip-flop circuit supplied from an auxiliary supply and the pulses may be repeated until terminated as a result of the cessation of load current. Half cycles of an A.C. supply may alternatively be used.
Patent GB-308960-A (GB)
Title: Improvements in indicating devices, particularly for use in telephone systems
IPC: H04M3/36
Filed: 1927-12-30
Abstract: 308,960. Automatic Telephone Manufacturing Co., Ltd., Ostline, J. E., and Evans, C. H. Dec. 30, 1927. Automatic and semi-automatic exchange systems.-Equipment for determining the number of apparatus units in use at a given time comprises a rotary switch which tests each unit in turn and a second rotary switch which advances each time a unit is found to be in use. Operation of the start key 10 connects up the time pulse wire 11, to which earth is connected 6 times per minute, to energize relays C, D, which connect impulse springs 60 operating 20 times per second to relay E. Relays H, T, F also energize and connect impulse springs 61 operating 10 times per second to relay G. Relay E causes the counting switch CS to advance and make connection with the test wires of the apparatus units, and each unit in use causes an impulse to be sent over wire 53 to advance the storage switch SS. After the first step of the switch CS, relay S energizes (being no longer shortcircuited). and when the first terminal is reached again, relay C falls back and relay A energizes, extending the impulses from relay G to operate the advance magnet AM of the indicating switch IS. This switch rotates until it reaches the position corresponding to that of the switch SS, when relay B energizes over wire 51 and releases relays A, H. Relays G, S, T are: disconnected and the switch SS restores. In response to the next time pulse over wire 11, the counting switch CS performs a second cycle. If the number of units in use is now less than before, relays T, S do not operate, and when relay C falls back at the end of the cycle, relay R energizes instead of relay A, so that the reverse drive magnet RM operates to step the indicating switch IS back to the position corresponding to that of the switch SS. If however the number is greater than before, relays T, S energize over wire 51 when the storage switch SS passes the position in which the switch IS stands, and the advance magnet AM becomes effective. The magnets AM, RM may cause a printed record to be made on a tape. In a modified arrangement also described, the indicating switch IS restores to normal before each count. The switch IS may be dispensed with by locating the indicating pointer on the switch SS, and arranging for this switch to remain off-normal until the next count begins.
Patent GB-1089295-A (GB)
Title: A new or improved sprocket wheel chain
IPC: B65G17/00
Filed: 1963-09-09
Abstract: 1,089,295. Chain gearing. MOLINS ORGANISATION Ltd. and J. A. RAKOWICZ. Sept. 1, 1964 [Sept. 9, 1963], No. 35507/63. Heading F2Q. A cigarette conveyer chain has alternate metallic and non-metallic links 1, 3. The links 3 are of nylon, " Delrin " or " Teflon " (Registered Trade Marks) or plastics. Two such chains run in parallel, with a cigarette straddled between them in contours 6 of the metal links 3 which coincide with contours 7 on the non- metallic link ends. The chain sprocket teeth 5 engage between the non-metallic links 3 for quiet running without lubrication and are spaced at twice the chain pitch. The lower chain run is supported by metal plates engaging projections 9 on the links 3.
Patent GB-1484193-A (GB)
Title: Electric induction machine winding
IPC: H02K17/14
Filed: 1974-08-12
Abstract: 1484193 Winding layouts in dynamo-electric machines AGENCE NATIONALE DE VALORISATION DE LA RECHERCHE 12 Aug 1974 [17 Aug 1973] 35518/74 Heading H2A In a pole changing polyphase induction machine winding, the winding coils are divided into a plurality of consecutive sets, the coils of one set remain connected to their respective phases when switching from one pole member to another, whereas the coils in each of the other sets are phase shifted by respective predetermined amounts, though some of the coils may be omitted in order to give a balanced winding for the second pole member. In general, if the coils are divided into m consecutive sets of successive coils, then the coils of the rth set, where r = 0, 1, 2 ... (m-1), are phase shifted by +2#r/m if the second pole member is 2 lower than the first and by - 2#r/m if the second pole member is 2 higher than the first. Thus in a 6/4 pole winding where the coils are divided into 3 sets (m = 3), the coils of one set (which is chosen to be centred on a pole of the four pole winding configuration) remain unaltered in phase when switching over from 4 poles to 6 poles, whereas the coils in the next set are respectively phase shifted by 2#/3 and the coils of the last set are shifted by 4#/3. Where the difference between the two pole members exceeds 2, say q.2, then the coils are first divided into q successive groups round the machine periphery and the division into m sets (with the consequent phase shifting of coils) is then performed within each group. The coils may be connected in a triple parallel star arrangement, Fig. 13 (not shown), the ends of the star arms being supplied for one pole member and the neutral points for the other. Coils omitted to ensure a balanced winding may form a fourth star (Fig. 15) or a delta (Fig. 16) in parallel with the three stars. They may alternatively be connected between the terminals and the ends of the star arms and/or the neutral points.
Patent GB-1427083-A (GB)
Title: Linear induction motor inductor
IPC: H02K41/025
Filed: 1973-07-26
Abstract: 1427083 Linear motor stators BBC BROWN BOVERI & CO Ltd 26 July 1973 [28 July 1972] 35545/73 Heading H2A The stator of a linear induction machine is formed from radial laminations having projections on their outer edges to separate the laminations on the outer circumference. In one form of embodiment, Fig. 2, the outer edges of the lamination sheets 3 are bent through two right angles to form a projection 5. By arranging the laminations side-by-side, the outer edges, having the projections 5 provide a larger circumference than the inner edges provided by the toothed poles 2 and a tubular stator is formed (Fig. 3, not shown) In an alternative form, the projections are formed by ribs 1c pressed out of the laminations. The deformed laminations may be separated by flat sheets which thus project beyond the stator circumference to provide cooling fins. The laminations may be provided with gaps in the projections which align when the stator is assembled to form annular rings which are filled with a weld bead to hold the stator together (Figs 8-11, not shown). The central moving member is rod shaped (Fig 4, not shown) and plastics bearings are provided therefore (Figs 15-19 not shown).
Patent GB-941110-A (GB)
Title: Improvements in valves for pressurised containers
Inventor: JR WALTER CAMERON BEARD
IPC: B65D83/14
Filed: 1962-09-19
Abstract: 941,110. Valves. RISDON MANUFACTURING CO. Sept. 19, 1962, No. 35624/62. Heading F2V. [Also in Division F1] An aerosol container 10 is closed by a sealed and crimped cover 16 with a central boss 20 to which is crimped a plastic cup member 22 enbodying a cavity 28 slidably housing the skirt 32 of a plastic valve-closure element 30 that incorporates a hollow stem 34 with a radial port 36 therethrough. In the valve closed position the port 36 is sealed by a gasket 40 of rubber or synthetic elastomeric material clamped under the boss 20 by compression of its outer periphery between an annular rib 42 on the cup member 22 and the boss 20. The shoulder between the stem 34 and skirt 32 also engages the gasket 40 to provide a further seal. The valve is closed by a spring 46, one end of which enters the skirt around a tapering port 48. The closure element 30 is guided for reciprocation by the skirt in the cavity 28 and the stem in boss aperture 21. The cup member 22 has a tail piece 50 engaged by the dip tub 52 whilst the stem 34 leads into a finger button 60 with a spray orifice 62. The bottom of the cup member 22 opens into the tail piece 50 via grooves 23 which both facilitate fluid discharge and pressure filling.
Patent GB-780760-A (GB)
Title: Improvements in roller skate wheels
IPC: F16C13/00
Filed: 1954-12-09
Abstract: 780,760. Roller skate wheels ball bearings. WELLS & CO., Ltd., A., and WELLS, A. W. J. Nov. 24, 1955 [Dec. 9, 1954], No. 35689/54. Classes 12 (1) and 144 (1). A roller skate wheel comprises a rubber or like body 10 with an axial cylindrical recess 11 in each face into which is press-fitted the outer race cup 16 of a ball or roller bearing unit 14, the inner race of each unit comprising a flanged axle sleeve 15 which extends with clearance into an axial bore 12, connecting the recesses 11, to abut, either directly or through a spacer, the inner race sleeve of the other bearing unit, and the two races of each units being held in assembled relation by an annular retaining plate 18 having its outer periphery 19 bent to embrace the rim of the outer race cup 16. Parts only of the edge 19 of the plate 14 may embrace the cup rim to leave upstanding projections to bite into the wheel body on assembly.
Patent GB-1186900-A (GB)
Title: Improved Low Pressure Process for the Production of Polyolefines
IPC: C08F10/00
Filed: 1967-08-03
Abstract: 1,186,900. Catalyst treatment. CHEMISCHE WERKE HœLS A.G. 3 Aug., 1967 [4 Aug., 1966], No. 35737/67. Heading C3P. Alpha-olefins are polymerized using a catalyst comprising (a) a hydride or organic compound of metals of groups I A , II A  and IIIB of the Mendeleeff Periodic System and (b) a compound of a transition metal of groups IVA, V A , VIA and VIII of the Mendeleeff Periodic System wherein the particles of component (b) are reduced in size, in the presence of (a), by the action of a mechanically produced high-frequency vibrational field of 15 kilocycles to 5 megacycles per second, for 0À3 second to 60 minutes. Another organometallic compound may be added to the catalyst suspension produced under the action of the vibrational field. The vibrational field may be obtained by the action of a mechanical kinematic high-frequency generator. In the examples, an ethylene-butylene copolymer, and an ethylene homopolymer, are each prepared using a catalyst consisting of a mixture of dipropoxy titanium dichloride and ethyl aluminium sesqui-chloride which have been treated in a high-frequency generator. In the ethylene homopolymerization, triethyl aluminium is added to the treated catalyst mixture. The polymer products are worked up with methanol, followed by centrifuging and drying.
Patent GB-447965-A (GB)
Title: Improved turbo-pump unit for extinguishing fires
IPC: F04D13/14
Filed: 1935-12-24
Abstract: 447,965. Making foam. SOC. DE MOTEURS A GAZ ET D'INDUSTRIE MECANIQUE, 135, Rue de 1a Convention, Paris. Dec. 24, 1935, No. 35771. Convention date, Dec. 27, 1934. [Class 47 (ii)] [See also Group XXVI] A fire extinguishing plant comprises two pumps 6, 7, which supply chemicals to delivery pipes 12, 13, the chemicals mixing at the outlet 16 to form foam. A hydraulic turbine 1 drives both pumps.
Patent GB-464220-A (GB)
Title: Improvements in appliances for teaching or practising golf
IPC: A63B69/00
Filed: 1935-12-30
Abstract: 464,220. Golf - teaching appliances. COMPSTON, A. Dec. 30, 1935, Nos. 35982/35 and 30540/36. [Class 132 (ii)] A base member or mat 1 is provided with an arcuate channel 3 representing the path of a golf club. A ball may be teed in the centre of the channel or a captive ball x may be used, attached to an arm 6 pivoted at 4a. A vertical post 5 may be included as a further guide for the player and may be connected to 4a by a link 7. The various parts are made, preferably, of rubber.
Patent GB-891724-A (GB)
Title: Improvements in gas torches for welding plastics
IPC: F23D14/34
Filed: 1958-11-10
Abstract: 891,724. Gas burners. MAX SIEVERT A.B. Nov. 10, 1958 [Nov. 12, 1957], No. 36009/58. Classes 75(1) and 75(3) In a gas torch for welding plastics comprising a mixing tube 42 opening into a combustion tube 50 leading to a duct 68 for combustion gases, the combustion tube 50 is displaceable relative to the mixing tube from a position wherein apertures 52 for ignition of the gas are covered by the mixing tube to a position wherein the apertures 52 are uncovered. The mixing tube 42 is supplied with gas through a nozzle 34 and with air through apertures 48 in its wall. The end of the mixing tube leading to the combustion tube 50 is covered by a gauze 44. A throat member 46 is disposed in the mixing tube. The combustion tube 50 slides on the mixing tube 42 between end positions defined by a screw 56 secured to the mixing tube and sliding in an axial slot 58 in the combustion tube. An apertured jacket 60 encloses the combustion tube and a bail 70 is pivoted to the jacket 60 and engages a sleeve 26 to lock the combustion tube in operating position. The sleeve 26 connects the mixing tube with a handle 10 through which a gas tube 14 extends. A gas valve 18 is mounted on the end of the handle.
Patent GB-1431130-A (GB)
Title: Method of producing a josephson-effect superconductive junction
IPC: H01L39/24
Filed: 1974-08-15
Abstract: 1431130 Superconductive devices COMMISSARIAT A L'ENERGIE ATOMIQUE 15 Aug 1974 [28 Aug 1973] 36040/74 Heading H3X A Josephson effect junction is produced by depositing on an insulating substrate a thin layer of a superconductive refractory material which is subsequently formed by etching into two studs 2, 4 linked by a bridge 6, the properties of a Josephson function being imparted to the bridge by subjecting it at low temperature to at least one conditioning current pulse. The bridge so formed requires limiting dimensions of between 5 and 30 microns. The superconductive material may consist of niobium deposited by evaporation while the substrate is maintained at a temperature of about 400 C. A metallic layer, e.g. gold, is subsequently deposited on the superconductive material, and the final form of junction is manufactured by photomasking and chemical etching, the gold layer providing electrical contacts 8, 10 over a restricted area of the studs.
Patent GB-1396948-A (GB)
Title: Apparatus for retreading pneumatic tyres
IPC: B29B11/00
Filed: 1972-08-02
Abstract: 1396948 Cutting tyre treads MICHELIN & CIE (COMPAGNIE GENERALE DES ETABS MICHELIN) 2 Aug 1972 [2 Aug 1971] 36196/72 Heading B5A Apparatus for cutting grooves such as 52 in the tread strip of pneumatic tyres comprises a U-shaped cutting blade 5 having a shape corresponding to the profile of the groove to be cut and forming part of a single turn 4 of a transformer secondary winding, the primary winding 2 of which is connected to a low voltage supply. The apparatus is fixed to one end of the cylinder 30 of an hydraulic jack, the piston-rod 35 of which has a clamp 36 for one end of a cable 37, the other cable end being detachably connected to a fixed position 38. The cable is engaged by a grooved wheel 8 and guide wheels 26 received by rails 27 held on the tyre tread. The weight of the apparatus is supported by a balancing device 40 via a cable 42. A groove is cut when fluid is supplied to the jack, and groove depth is controlled by shims 28. Probes 12, 13 cut off the power supply at a predetermined blade temperature.
Patent GB-822168-A (GB)
Title: Improvements relating to solid-insulated joints between insulated high-voltage conductors
Inventor: FAY FRANCIS SYDNEY
IPC: H02G5/00
Filed: 1954-12-15
Abstract: 822,168. Cable joints. REYROLLE & CO. Ltd., A. Dec. 13, 1955 [Dec. 15, 1954], No. 36263/54. Class 38 (1). A bolted connection between three highvoltage conductors 10, 11, 12 each embedded in synthetic resin or other solid insulation 13, is reinforced by a metal plate 15 and enclosed in a box 20 of synthetic resin formed by enclosing the joint in a mould and pouring the resin into it, the latter then converting into the solid state by polymerization, the ends of the conductors being first coated by a resin-impervious compound. A cold-setting resin, e.g. an unsaturated polyester resin cross-linked by a modifying agent such as styrene and loaded with a filler such as powdered slate or silica is suggested. An insulating compound 16, e.g. talc and castor oil is provided immediately round the joint, sponge rubber pads 17 being embedded in the compound to permit shrinkage of the synthetic resin during moulding and to prevent cracking of the box during thermal expansion of the compound 16. The pads 17 are coated with electrically conducting paint to prevent electrical stressing of the air pockets, a thin film of silicone grease being then applied so that the compound can easily be removed from the pads when the joint is being dismantled.
Patent GB-1479456-A (GB)
Title: Preparation of mastic asphalt blocks
IPC: E01C19/08
Filed: 1974-06-19
Abstract: 1479456 Asphalt cauldrons F D BUTTIFANT 19 June 1974 [31 July 1973] 36343/73 Heading E1G In a method for rapidly providing molten asphalt ready for use, preformed asphalt blocks (e.g. of 56 lbs weight) are fed serially to, and supported in, a heating zone 15 located between radiant heating panels 17, the asphalt dripping from the blocks being collected and maintained molten - e.g. in a container 20. As shown the blocks are gravity fed down a passage 14 and supported in the zone 15 on bars 16 between two opposed radiant gas-fired panels 17, the double-skinned container 20 incorporating a burner 25 and a stirrer. A fan may be provided to draw hot gases from the space between the containers skins into the region of the panels 17.
Patent GB-364853-A (GB)
IPC: B64C11/16
Abstract: 364,853. Screw propellers. LAWRENCE, H., 6, Stanlake Road, Shepherd's Bush, London. Jan. 14, 1931, No. 1257. [Class 114.] A screw propeller blade is provided on each side thereof with a cupped and inclined casting for augmenting the flow across it, the castings being secured thereto at their inner and outer ends so as to be back to back as in the Figure.
Patent GB-1242744-A (GB)
Title: Process for producing coating of fluorescent lamps
Inventor: SZABO JANOS
IPC: H01J61/44
Filed: 1968-07-31
Abstract: 1,242,744. Luminescent materials. EGYESULT IZZOLAMPA ES VILLAMOSSAGI RESZVENYTARSASAG. 31 July, 1968, No. 36575/68. Heading C4S.  A halophosphate fluorescent powder is prepared by grinding the powder grains to less than 20 Ám. diameter, removing grains less than 5 Ám. and adding 2 to 11.5%, by wt. of the remaining grains, of a fluorescent powder less than 2 Ám. The halophosphate is activated by Mn and Sb. The added powder may be obtained from the removed portion by further separation or by additional grinding. Alternatively synthetic apatite crystals may be added.